Answer to: Why do callers hear an echo during phone calls?My husband has the Samsung Galaxy Note 3, and the echo (that his callers would hear, of their own voices) was awful and distracting. Just now, I read about the case sometimes being the issue. I called him, got the echo, and had him remove his case. Voila! Problem 100% solved!! No idea what brand his case is, but removing it fixed the issue. Thanks, everyone, for sharing your issues!